Skip to main content

City of Los Angeles Tests 48 Year Old T-Lock Protected Pipe and 72 Year Old Tile Lined Pipe

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.

or click here to sign up for a free trial


The City of Los Angeles has removed a section of pipe from the La Cienega / San Ferndando Valley Relief Sewer after 48 years of service and performed testing on it to determine how its current condition. This pipe was protected by T-Lock and has been continually in service. Testing included compressive strength of the concrete, tensile strength and pull out resistance of the reinforcing steel, petrographic analysis of the concrete of the pipe at invert and springline. The T-Lock was tested for hardness, tensile strength, elongation at failure, and pull off resistance. Both the pipe and the T-Lock were found to be in excellent condition after 48 years of service.

Testing was also done on sections of pipe removed from the North Outfall Sewer after 78 years of service. This sewer was protected by clay tile liner. Compressive strength testing and petrographic analysis were performed on this sewer. Significant corrosion due to sulfate attack was found in this sewer.

Document Type: Research Article


Publication date: January 1, 2002

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Ingenta Connect is not responsible for the content or availability of external websites

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more